Source: http://www.univ-bejaia.dz/jspui/bitstream/123456789/11063/1/Analyse%20s%C3%A9miotique%20des%20proc%C3%A9d%C3%A9s%20touristiques%20publicitaires%20%C3%A0%20Bejaia%20%20cas%20Flyers%20et%20d%C3%A9pliants.pdf